Inlet-valve mechanism for internal-combustion engines.



No. 876,236. PATENTED JAN. 7. 1908.

H. REINSHAGEN.

INLET VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLIOATION FILED 00T.27.1905.

O 18 1% INVENTOR:

igr/ma /K.

, UNITED 's'rivrns PATENT oninon.

HUGO REINSHAGI'IN, OF COLOGNE, GERMANY, ASSIGNOR TO THE O'lTO GAS ENGINEWORKS, OF PHILADELPHIA, PENNSYILVANIA, A CORPORATION OI" PENNSYLVANIA.

Specification of Letters Patent.

Patented Jan, 7, 1908.

Application filed October 27.1905. Serial No. 284.627.

To all whom it may concern: Be it known that I, HUGO REINSIIAGEN, (ifCologne, Germany, have invented certain new and useful Improvements inInlet-Valve Mechani'smforInternal-Combostion Engines, whereof thefollowing is a specification, reference being had to the accompanyingdrawings.

My improvements are particularly ap- 10 plicable to engines which aregoverned by changing the fulcrum of a lever which either directly orindirectl operates the inlet valve, whereby the period of o ening orclosingof the valve or both, ant consequently the quantity of each.charge admitted is automatical y predetermined.

It is the object of my invention to provide means to relieve the movablefulcrum of said lever froinpressure during the time when the valve isclosed so that it can be moved by the governor, and, as hereinafterdescribed, this is effected by a cam and connections which hold thelever on a stationary fulcrum during said time and thereby sustainthestress of a spring which normally tends to open the valve.

My invention comprises the various novel features of construction andarrangement hereinafter more definitely specified.

In the' drawings, Figure I, is a diagrammatic sectional WBW, showingvalve mechanism embodying my invention, operatively connected with aninlet valve, thelatter being in closed osition. Fig. II, is a view 85similar to Fig. but showin the inlet valve open. Figs. III, and IV, 810Wa modified form of my invention wherein the movable fulcrum is affordedby an eccentric which is rotated by the action of the governor. Fig. 40'III, shows the position of the eccentric when the engine is runningidly or with a light load, and the valve is open only to a small extent,and Fig. IV, shows the eccentric in position for running the engineunder full load.

Referring to Figs. I, and II; the engine casing 1, inclosing thecombustion chamber 2, has the inlet 3, which is controlled by the valve4, fitted to the seat 5. Said valve 4, is provided with the stem 6,connected by the spring yoke 7, with the stem '8. The spring 9, isarranged to press the valve 4, on its seat anilthe spring 10, tends toalways" open said vs ve. Y

The mechanism which relieves the valve be rotated by the governor.

' from the. tension of said spring 10, while'the valve is closed,comprises the lever 12, which is then held on the fixed support 13, asshown in Fig. I. Said lever l2, is opcratively connected with the caml5, by the rod 16, and bell crank lever 17, the latter being providedcam. It may be observed that the fulcrum 19, of said lever 17, isstationary.

The proportions of the parts above described are such that as long asthe roller'lS, is in contact with the largest circuml'crei'ice of thecam 15; the valve 4, is held upon its seat 5, by said cam, underpressure of the spring J, and, said springs t), and ll), can only expandand permit the valve 4, to open when the roller 18, passes from thegreater to the less radius of the cam 15.

Adjoining the fixed fulcrum 13, of the lever 12, is the movable fulcrum20, which is conveniently an arm, arranged to be oscillated in thebearing 21, on the shaft 22, by the governor. It may be observed thatduring the time when the valve l, is closed, said movable fulcrum 20, isrelieved from pressure of the lever 12, and the spring 10; so that it ispossible for the governor to shift said support 20.

It is to be understood that at the beginning of the opening movement ofthe valve 4, the lever 12, changes from the fixed fulcrum 13, to themovable fulcrum 20, and the valve is consequently opened for suchperiods and to such an extent as is predetermined by the relativeposition of said movable fulcrum 20. Allthough the movable fulcrum 20,above described is arranged to be shifted in the direction of the lengthof the lever 12, it is to be understood that it may be otherwiseconstructed and arranged; for instance, as shown in Figs. Ill, and IV,the movable fulcrum is afforded by; the eccentric 25, on the shaft .26,the latter being arranged to It may be observed that in Fig. Ill, saideccentric. .25, is so rotated as to ali'ord a fulcrum for the ever 27,differing in location from that allordcd in the position of saideccentric shown in Fig. IV.

Fig. lll, shows the position of the eccentl'ic 25, c-orrespomling withthe operation of the engine while running idly or under a light load,(when the valve 4, is open only a small extent,) and Fig. .lV, shows theposition of with the rollcr l8, for engagement with said eration of theengine under full load, the

' maybe omitted, in-Whieh case; the arrange mentmay -b'e such that themovement of the eazn'lfi pri e-sure.

fleteils o f feonstiue ion and'arrengement "hrem'set forth, es

departing t movehleiulei'uinis relieved for actuation by 1th governorwhen the valve 1s closed, subthe eccentric 25, corresponding Withtheopvalve being'then open to its full extent.

.Itma y beobs'ervedithat the spring 9, is not an essentielelement'of themechanism and "merely resents the valve 4, upon its seet fey-where itleforced bythe internalfluid I d notXlesire to limit myself to the pre'@umtrmsmd lever; sofltma tedthat said Ytentisilly as set forth.-

-2. I In unjmternal combustion engine, the

combination with a valve; of a spring tendv I mg to open saul valve; alever provided with I means to close sand valve; a, movable fulcrum-forsaid lever, comprising an eccentric in operative connection with theengine 'overnor; end, an auxiliary fulcrum for sai lever; whereby said'nievable fulcrumis'relieved for actuation by the ove rntn when thevalve is close(l,'substanti fly as set forth. .3 In an internaleomb'ustio'n engine, the combination with an inlet valve provided with astem of a spring yoke connected with seicl' stein; spring between saidyoke-and stein permitting reltt'tive xnovement thereof; 1

a spring inoperative relationiwvitli said yoke,

tending to opensaid valve; aleverpivotegl .at one end to Sfl-ltl yokeand opel'etively convnested at its otl1er'en '.l with. eani;,..a,i Sta?tionery fulcrum for said 'leVeLinteBnied' e of its ends; and, al'novablefulcrurnfoi ,said

lever intermediate of its ends; jinopereiti-ve 3 .1 by said movablefulcrum is relieved tomct a connection with the engine gevernor; zfwheretionby the governor whenthe velv' S -closed substantially aseet forth.

In testimony wherofllhhav hereunto signed my name at cologne, G 13th(lay of October, 1905i v HUGQ REI' "itnesses v lhassnc F. Duxmr, LouisVANDURN;

